Pathogenicity of Phoma Chrysanthemicola to Chrysanthemum Plants (Asteraceae Family) and Control of Pathogen by Chemical and Biological Approach

Pramod Kumar Mahish¹ and Anjali Ghritlahare²

¹Department of Biotechnology, Govt. Digvijay Post Graduate (Autonomous) College Rajnandgaon (Chhattisgarh), India.

²Krishi Vigyan Kendra (KVK) Kanker, Affiliated with Indira Gandhi Agriculture University Raipur (Chhattisgarh), India.

Corresponding Author E-mail: drpramodkumarmahish@gmail.com

DOI : http://dx.doi.org/10.13005/bbra/2561

ABSTRACT: The Chrysanthemum also known as mums or chrysenths, are useful in ornamental applications, insecticidal, air pollution reducer, perfume production etc. The Phoma causes infection to Chrysanthemum which results in serious lesion. The present study reports protection of Chrysanthemum against fungal infection. The morphology of Phoma chrysanthemicola was studied in PDA, CZA and MEA medium. The pathogenicity of fungus was examined on different variety of chrysanthemum plants. The control of P. chrysanthemicola was contemplated by utilizing some commercial available fungicides and extract of medicinal plants. The organism causes root rot and ray blight to Chrysanthemum plants. Chrysanthemum sp. 2 was found more sensitive to pathogen took after by Chrysanthemum sp. 1 and 3. Relationship between diseases severity and incubation period of pathogen with various chrysanthemum plant was found R² 0.95, 0.97 and 0.87 for Chrysanthemum sp. 1, 2 and 3. Carbendazim was recorded more effective on P. chrysanthemicola followed by mancozeb and zineb with P value of 0.065 at 0.05 level. Azadirachta indica extract and plant extract from methanolic solvent were found more effective against P. chrysanthemicola. Now it is presumed that fungal pathogen has strong ability to infect chrysanthemum but chemical and biological alternate can control the chrysanthemum against pathogen.

KEYWORDS:  Azadirachta indica;  Chrysanthemum;  Carbendazim;Phoma Chrysanthemicola;Ocimum tenuiflorum

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